84739387 has 2 divisors, whose sum is σ = 84739388. Its totient is φ = 84739386.

The previous prime is 84739381. The next prime is 84739451. The reversal of 84739387 is 78393748.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84739387 - 2¹¹ = 84737339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84739387.

It is not a weakly prime, because it can be changed into another prime (84739381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42369693 + 42369694.

It is an arithmetic number, because the mean of its divisors is an integer number (42369694).

Almost surely, 2^84739387 is an apocalyptic number.

84739387 is a deficient number, since it is larger than the sum of its proper divisors (1).

84739387 is an equidigital number, since it uses as much as digits as its factorization.

84739387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 84739387 is about 9205.3998826776. The cubic root of 84739387 is about 439.2331460143.

The spelling of 84739387 in words is "eighty-four million, seven hundred thirty-nine thousand, three hundred eighty-seven".